Reconstructing the arrival direction of neutrinos in deep in-ice radio detectors

TL;DR

This paper presents a method for reconstructing the arrival direction of EeV neutrinos detected by deep in-ice radio detectors, crucial for astrophysical source identification.

Contribution

It introduces a complete neutrino arrival direction reconstruction algorithm for deep in-ice radio detectors like RNO-G and IceCube-Gen2.

Findings

Demonstrates the algorithm's performance through simulation studies

Highlights implications for astrophysics and neutrino source localization

Addresses challenges in radio-based neutrino direction reconstruction

Abstract

In-ice radio detectors are a promising tool for the discovery of EeV neutrinos. For astrophysics, the implications of such a discovery will rely on the reconstruction of the neutrino arrival direction. This paper describes a first complete neutrino arrival direction reconstruction for detectors employing deep antennas such as RNO-G or planning to employ them like IceCube-Gen2. We will didactically introduce the challenges of neutrino direction reconstruction using radio emission in ice, elaborate on the detail of the algorithm used, and describe the obtainable performance based on a simulation study and discuss its implication for astrophysics.